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Vacca B, Sanchez-Heras E, Steed E, Busson SL, Balda MS, Ohnuma SI, Sasai N, Mayor R, Matter K. Control of neural crest induction by MarvelD3-mediated attenuation of JNK signalling. Sci Rep 2018; 8:1204. [PMID: 29352236 PMCID: PMC5775312 DOI: 10.1038/s41598-018-19579-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/04/2018] [Indexed: 12/26/2022] Open
Abstract
Tight junctions are required for the formation of tissue barriers and function as suppressors of signalling mechanisms that control gene expression and cell behaviour; however, little is known about the physiological and developmental importance of such signalling functions. Here, we demonstrate that depletion of MarvelD3, a transmembrane protein of tight junctions, disrupts neural crest formation and, consequently, development of neural crest-derived tissues during Xenopus embryogenesis. Using embryos and explant cultures combined with a small molecule inhibitor or mutant mRNAs, we show that MarvelD3 is required to attenuate JNK signalling during neural crest induction and that inhibition of JNK pathway activation is sufficient to rescue the phenotype induced by MarvelD3 depletion. Direct JNK stimulation disrupts neural crest development, supporting the importance of negative regulation of JNK. Our data identify the junctional protein MarvelD3 as an essential regulator of early vertebrate development and neural crest induction and, thereby, link tight junctions to the control and timing of JNK signalling during early development.
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Affiliation(s)
- Barbara Vacca
- Institute of Ophthalmology, University College London, London, EC1V 9EL, UK
| | | | - Emily Steed
- Institute of Ophthalmology, University College London, London, EC1V 9EL, UK.,Institute of Epigenetics and Stem Cells, Helmholtz Zentrum München, D-81377, Munich, Germany
| | - Sophie L Busson
- Institute of Ophthalmology, University College London, London, EC1V 9EL, UK
| | - Maria S Balda
- Institute of Ophthalmology, University College London, London, EC1V 9EL, UK
| | - Shin-Ichi Ohnuma
- Institute of Ophthalmology, University College London, London, EC1V 9EL, UK
| | - Noriaki Sasai
- Developmental Biomedical Science, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), 8916-5, Takayama-cho, Ikoma 630-0192, Japan
| | - Roberto Mayor
- Department of Cell and Developmental Biology, University College London, Gower Street, London, WC1E 6BT, UK
| | - Karl Matter
- Institute of Ophthalmology, University College London, London, EC1V 9EL, UK.
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Vacca B, Sanchez-Heras E, Steed E, Balda MS, Ohnuma SI, Sasai N, Mayor R, Matter K. MarvelD3 regulates the c-Jun N-terminal kinase pathway during eye development in Xenopus. Biol Open 2016; 5:1631-1641. [PMID: 27870636 PMCID: PMC5155527 DOI: 10.1242/bio.018945] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Ocular morphogenesis requires several signalling pathways controlling the expression of transcription factors and cell-cycle regulators. However, despite a well-known mechanism, the dialogue between those signals and factors remains to be unveiled. Here, we identify a requirement for MarvelD3, a tight junction transmembrane protein, in eye morphogenesis in Xenopus MarvelD3 depletion led to an abnormally pigmented eye or even an eye-less phenotype, which was rescued by ectopic MarvelD3 expression. Altering MarvelD3 expression led to deregulated expression of cell-cycle regulators and transcription factors required for eye development. The eye phenotype was rescued by increased c-Jun terminal Kinase activation. Thus, MarvelD3 links tight junctions and modulation of the JNK pathway to eye morphogenesis.
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Affiliation(s)
- Barbara Vacca
- Institute of Ophthalmology, University College London, London EC1V 9EL, UK
| | | | - Emily Steed
- Institute of Ophthalmology, University College London, London EC1V 9EL, UK
| | - Maria S Balda
- Institute of Ophthalmology, University College London, London EC1V 9EL, UK
| | - Shin-Ichi Ohnuma
- Institute of Ophthalmology, University College London, London EC1V 9EL, UK
| | - Noriaki Sasai
- Division of Biomedical Sciences, Developmental Biomedical Science Laboratory, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), 8916-5, Takayama-cho, Ikoma 630-0192, Japan
| | - Roberto Mayor
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Karl Matter
- Institute of Ophthalmology, University College London, London EC1V 9EL, UK
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Kuster A, Nola S, Dingli F, Vacca B, Gauchy C, Beaujouan JC, Nunez M, Moncion T, Loew D, Formstecher E, Galli T, Proux-Gillardeaux V. The Q-soluble N-Ethylmaleimide-sensitive Factor Attachment Protein Receptor (Q-SNARE) SNAP-47 Regulates Trafficking of Selected Vesicle-associated Membrane Proteins (VAMPs). J Biol Chem 2015; 290:28056-28069. [PMID: 26359495 DOI: 10.1074/jbc.m115.666362] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Indexed: 11/06/2022] Open
Abstract
SNAREs constitute the core machinery of intracellular membrane fusion, but vesicular SNAREs localize to specific compartments via largely unknown mechanisms. Here, we identified an interaction between VAMP7 and SNAP-47 using a proteomics approach. We found that SNAP-47 mainly localized to cytoplasm, the endoplasmic reticulum (ER), and ERGIC and could also shuttle between the cytoplasm and the nucleus. SNAP-47 preferentially interacted with the trans-Golgi network VAMP4 and post-Golgi VAMP7 and -8. SNAP-47 also interacted with ER and Golgi syntaxin 5 and with syntaxin 1 in the absence of Munc18a, when syntaxin 1 is retained in the ER. A C-terminally truncated SNAP-47 was impaired in interaction with VAMPs and affected their subcellular distribution. SNAP-47 silencing further shifted the subcellular localization of VAMP4 from the Golgi apparatus to the ER. WT and mutant SNAP-47 overexpression impaired VAMP7 exocytic activity. We conclude that SNAP-47 plays a role in the proper localization and function of a subset of VAMPs likely via regulation of their transport through the early secretory pathway.
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Affiliation(s)
- Aurelia Kuster
- Membrane Traffic in Health and Disease, INSERM U950, CNRS, UMR 7592, Institut Jacques Monod, Université Paris Diderot, Sorbonne Paris Cité, F-75013 Paris
| | - Sebastien Nola
- Membrane Traffic in Health and Disease, INSERM U950, CNRS, UMR 7592, Institut Jacques Monod, Université Paris Diderot, Sorbonne Paris Cité, F-75013 Paris
| | - Florent Dingli
- Protein Mass Spectrometry Laboratory, Institut Curie, 75005 Paris
| | - Barbara Vacca
- Membrane Traffic in Health and Disease, INSERM U950, CNRS, UMR 7592, Institut Jacques Monod, Université Paris Diderot, Sorbonne Paris Cité, F-75013 Paris
| | - Christian Gauchy
- Membrane Traffic in Health and Disease, INSERM U950, CNRS, UMR 7592, Institut Jacques Monod, Université Paris Diderot, Sorbonne Paris Cité, F-75013 Paris
| | - Jean-Claude Beaujouan
- Membrane Traffic in Health and Disease, INSERM U950, CNRS, UMR 7592, Institut Jacques Monod, Université Paris Diderot, Sorbonne Paris Cité, F-75013 Paris
| | - Marcela Nunez
- Hybrigenics, 3-5 Impasse Reille, 75014 Paris, France
| | | | - Damarys Loew
- Protein Mass Spectrometry Laboratory, Institut Curie, 75005 Paris
| | | | - Thierry Galli
- Membrane Traffic in Health and Disease, INSERM U950, CNRS, UMR 7592, Institut Jacques Monod, Université Paris Diderot, Sorbonne Paris Cité, F-75013 Paris.
| | - Veronique Proux-Gillardeaux
- Membrane Traffic in Health and Disease, INSERM U950, CNRS, UMR 7592, Institut Jacques Monod, Université Paris Diderot, Sorbonne Paris Cité, F-75013 Paris
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Steed E, Elbediwy A, Vacca B, Dupasquier S, Hemkemeyer SA, Suddason T, Costa AC, Beaudry JB, Zihni C, Gallagher E, Pierreux CE, Balda MS, Matter K. MarvelD3 couples tight junctions to the MEKK1-JNK pathway to regulate cell behavior and survival. J Cell Biol 2014; 204:821-38. [PMID: 24567356 PMCID: PMC3941049 DOI: 10.1083/jcb.201304115] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 01/23/2014] [Indexed: 12/20/2022] Open
Abstract
MarvelD3 is a transmembrane component of tight junctions, but there is little evidence for a direct involvement in the junctional permeability barrier. Tight junctions also regulate signaling mechanisms that guide cell proliferation; however, the transmembrane components that link the junction to such signaling pathways are not well understood. In this paper, we show that MarvelD3 is a dynamic junctional regulator of the MEKK1-c-Jun NH2-terminal kinase (JNK) pathway. Loss of MarvelD3 expression in differentiating Caco-2 cells resulted in increased cell migration and proliferation, whereas reexpression in a metastatic tumor cell line inhibited migration, proliferation, and in vivo tumor formation. Expression levels of MarvelD3 inversely correlated with JNK activity, as MarvelD3 recruited MEKK1 to junctions, leading to down-regulation of JNK phosphorylation and inhibition of JNK-regulated transcriptional mechanisms. Interplay between MarvelD3 internalization and JNK activation tuned activation of MEKK1 during osmotic stress, leading to junction dissociation and cell death in MarvelD3-depleted cells. MarvelD3 thus couples tight junctions to the MEKK1-JNK pathway to regulate cell behavior and survival.
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Affiliation(s)
- Emily Steed
- Department of Cell Biology, Institute of Ophthalmology, University College London, London EC1V 9EL, England, UK
| | - Ahmed Elbediwy
- Department of Cell Biology, Institute of Ophthalmology, University College London, London EC1V 9EL, England, UK
| | - Barbara Vacca
- Department of Cell Biology, Institute of Ophthalmology, University College London, London EC1V 9EL, England, UK
| | - Sébastien Dupasquier
- CELL Unit, de Duve Institute and Université Catholique de Louvain, B-1200 Brussels, Belgium
| | - Sandra A. Hemkemeyer
- Department of Cell Biology, Institute of Ophthalmology, University College London, London EC1V 9EL, England, UK
| | - Tesha Suddason
- Department of Immunology, Imperial College London, London W12 0NN, England, UK
| | - Ana C. Costa
- Department of Cell Biology, Institute of Ophthalmology, University College London, London EC1V 9EL, England, UK
| | - Jean-Bernard Beaudry
- CELL Unit, de Duve Institute and Université Catholique de Louvain, B-1200 Brussels, Belgium
| | - Ceniz Zihni
- Department of Cell Biology, Institute of Ophthalmology, University College London, London EC1V 9EL, England, UK
| | - Ewen Gallagher
- Department of Immunology, Imperial College London, London W12 0NN, England, UK
| | - Christophe E. Pierreux
- CELL Unit, de Duve Institute and Université Catholique de Louvain, B-1200 Brussels, Belgium
| | - Maria S. Balda
- Department of Cell Biology, Institute of Ophthalmology, University College London, London EC1V 9EL, England, UK
| | - Karl Matter
- Department of Cell Biology, Institute of Ophthalmology, University College London, London EC1V 9EL, England, UK
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Vacca B, Bazellières E, Nouar R, Harada A, Massey-Harroche D, Le Bivic A. Drebrin E depletion in human intestinal epithelial cells mimics Rab8a loss of function. Hum Mol Genet 2014; 23:2834-46. [PMID: 24399445 DOI: 10.1093/hmg/ddt670] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Intestinal epithelial cells are highly polarized and exhibit a complex architecture with a columnar shape and a specialized apical surface supporting microvilli organized in a brush border. These microvilli are rooted in a dense meshwork of acto-myosin called the terminal web. We have shown recently that Drebrin E, an F-actin-binding protein, is a key protein for the organization of the terminal web and the brush border. Drebrin E is also required for the columnar cell shape of Caco2 cells (human colonic cells). Here, we found that the subcellular localization of several apical markers including dipeptidyl peptidase IV (DPPIV) was strikingly modified in Drebrin E-depleted Caco2 cells. Instead of being mostly present at the apical surface, these proteins are accumulated in an enlarged subapical compartment. Using known intracellular markers, we show by both confocal and electron microscopy that this compartment is related to lysosomes. We also demonstrate that the enrichment of DPPIV in this compartment originates from apical endocytosis and that depletion of Rab8a induces an accumulation of apical proteins in a similar compartment. Consistent with this, the phenotype observed in Drebrin E knock-down Caco2 cells shares some features with a pathology called microvillar inclusion disease (MVID) involving both Myosin Vb and Rab8a. Taken together, these results suggest that Drebrin E redirects the apical recycling pathway in intestinal epithelial cells to the lysosomes, demonstrating that Drebrin E is a key regulator in apical trafficking in Caco2 cells.
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Affiliation(s)
- Barbara Vacca
- Aix-Marseille University, CNRS, UMR7288, Developmental Biology Institute of Marseille (IBDM), Case 907, 13288 Marseille, Cedex 09, France
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Abstract
Two-photon microscopy (2PM) has become a gold standard for deep-tissue observations in the living animal as well as on thick samples. Using 2PM, the endofluorescence properties of biomolecules have shown an interesting potential for the imaging of tissues without any staining. In this short communication, we report a method to observe the different layers of mouse small intestine explants with subcellular resolution and without any staining or clearing. This method allows rapid observations of samples with little to no preparation thanks to the endofluorescence properties of biomolecules such as NAD(P)H or flavins and second-harmonic generation. Finally, we show different three-dimensional reconstructions of the mouse small intestine anatomy obtained with this approach to show the potential of this method in morphological studies.
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Affiliation(s)
- Clément Ricard
- CNRS UMR 7288, Developmental Biology Institute of Marseille Luminy (IBDML), Marseille, France.
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